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Mini-Photohelic® Differential Pressure Switch/Gage

Series MP

The Series MP Mini-Photohelic® differential pressure switch/gage combines the time proven Minihelic® II differential pressure gage with two SPDT switching set points. The Mini-Photohelic® switch/gage is designed to measure and control positive, negative, or differential pressures consisting of non-combustible and non-corrosive gases. Gage reading is independent of switch operation. Switching status is visible by LED indicators located on the front and rear of the gage. Set points are adjusted with push buttons on back of unit. This extremely compact switch/gage is ideal for fume hoods, dust collection, pneumatic conveying and clean room applications.

  • Service: Air and non-combustible, compatible gases
  • Wetted Materials: Consult factory
  • Accuracy: ±5% of FS @ 70°F (21.1°C). Gage face mounted in vertical position
  • Pressure Limits: 30 psig (2.067 bar)
  • Temperature Limits: 20 to 120°F (-6.7 to 49°C)
  • Process Connections: Barbed for 3/16" I.D. tubing; 1/8" male NPT optional
  • Size: 4-1/8" (104.78 mm) depth x 3-1/16" (77.79 mm) diameter
  • Weight: 23 oz (652 g)
  • Switch Type: (2) SPDT relays
  • Electrical Rating: 5A @ 120/240 VAC Resistive; 5A @ 30 VDC
  • Electrical Connections: Screw type terminal block. Accepts 22-12 AWG wire.
  • Power Requirements: 24 VDC/24 VAC 50/60 Hz 4 watts
  • Mounting Orientation: Gage face in vertical position
  • Set Point Adjustment: Push Buttons
  • Standard Accessories: (2) mounting screws, (1) .050" hex allen wrench
  • Agency Approvals: CE, cUL, UL.




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